Introduction - If you have any usage issues, please Google them yourself
This article discusses the issue of slope sun in real life applications. Based on the assumptions in the model, we projected on the ground near the sun as a uniform motion, with an emphasis on the critical state will be discussed: only preserved, there is no top-light situations only the top light, there is no side light of the situation both There Side light another top-light situation. And then from the daily life of several common trend of things, southeast, north and south to analyze